Furnace structure.



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- FURNACE STRUCTURE, APPLICATION FILED Au.3o. I9I`7.

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Patented Mar. 26, 1918.

C. D. MO

FURNACBSTR RE.

APPLICATION FILED Au VVENTH es .17. .77555971 7' .Patented MM. 26, 191s.

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FURNACE STRUCTURE.

APPLICATION FILED Aus.ao. m1.

Patented Mar. 26, 191.8.

3 SHEETS-SHEET 3.

i CHARLES D. MOSHER, 0F NEW YORK, N'. Y.

FURNACE STRUCTURE.

Specification of Letters Patent.

Patented Mar. 26, 1918.

Substitute for application Serial No. 51,471, filed September 18, 1915. Thisapplication led August 30, 1917.

Serial No. 188,916.

To all whom z't may concern.'

. Be it known that I, CHARLES D. Mosman, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Furnace Structures, of which the following is a. specification, reference being had therein to the accompanying drawing.

My invention relates to improvements in furnace structure and more particularly has reference to means in combination with a furnace for burning liquid or gaseous fuel whereby the proper quantity of air is sup plied at the proper temperature to insure more perfect combustion.

Referring to the accompanying drawings,

Figure 1 illustrates in side elevation, partly broken away, an application of my invention as applied to a steam boiler. Fig. 2 is an enlarged view in front elevation showing the details of one form of my units or sections which are preferably made of carborundum and are adapted for heating and controlling the direction of the air prior to ignition. Fig. 3 is a view looking from right to left on line 3-3 of Fig. 2. Fig. 4 is a cross sectional detail of a modification in which the sections or units are formed integrally so as to be fitted into a furnace as a whole, and Fig. 5 is a cross section on the line 5-5 of Fig. 4. Fig. 6 is a plan View, partly broken away, illustrating the position of the units or sections in the furnace charnber. `Fig. 7 illustrates in side elevation, partly broken away, and partly in longitudinal section, the several units or sections formed integrally so as to be conveniently placed as a whole in position within or removed from the furnace.

v7 is the usual front wall of the furnace,

and 8 the bridge wall thereof. 9 are the usual grate bars, and 10 the sections or units preferably of carborundum against the upper edges of which a suitable jet of liquid ,or gaseous fuel such as 11 may be directed by a fan shaped nozzle 12, or other suitable means. 13 indicates the pit through which air may be supplied under pressure to pass upwardly through the channels or ducts 10 in the units or sections 10.

In the application of my invention shown in Fig. 1, the units are stacked as indicated in Fig. 3. The units may be of any suitable refractory material but are preferably made of carborundum and are provided with channels or ducts such as indicated by the reference character 10 through which the airis driven by a fan or other suitable means from beneath the grate bars and u'p through the channels or ducts 10 into the combustion chamber.

In the modification shown in Figs. 4 and 5, it will be seen that the units may be formed integrally or in a single piece as shown, the airl passing through the chamber 14 and upwardly into the combustion chamber 14 through the channels such as 15.

The fuel from the nozzle 12 which is preferably constructed to deliver a fan shaped jet as shown in Fig. 6 is directed under pressure so as to strike the upper faces or edges of the carborundum sections indicated by the reference character 16 so as not to oppose the iniow of air passing upwardly through the ducts or channels 15. As the fuel and air are ignited the contact of the hot gases and radiation of the heat upon the carborundum units or sections heat the samer--.

to a very high degree thereby insuring the heating of the air as it passes through the same as aforesaid thus creating an intensely hot radiating surface and insuring a perfect mixture of air as itis projected in the opposite direction into the incoming fuel vthus utilizing the combined velocities of the air and gas at the point of impact and insuring the most intimate mixture. The form and arrangement of the refractory material provides ridges in front of the air channels or ducts thus preventing the ame or gas from the burners being projected into the air ducts due to position of the burner which 1s placed so low as to direct the gas or flame sufficiently horizontal.

Where the sections or units are stacked andnested as indicated in Figs. 42 and 3, the same may of course be supported by the grate bars such as 9, but where the same are formed integrally in a single structure such as indicated in Figs. 4 and 5, the entire structure may be readily fitted in place, and4 of course the grate bars will not be necessary. The air admitted beneath the combustion chamber it will be observed flows upwardly and is then caused to reverse its direction of flow so that it is delivered to the furnace in the opposite direction to the infiowing fuel which strikes it above the .air outlets and instantly mixes with the air driving the intensely heated products of `combustion rearwardly over the bridge wall.

In the form of my invention such as illustrated in Fig. 7 it is of course preferable to supply the air under pressure, the same entering by the inlet 18 and passing upwardly through the ducts 15 from the chamber 14 where it meets the incoming fuel in opposite direction as aforesaid.

Of course it will be understood that various modifications may be made in the construction and arrangement of the parts without departing from the spirit of the invention as claimed.

Iclaim:

1. In a furnace, a structure having aseries of passages extending upwardly and rearwardly from the bottom, then forwardlyk and upwardly through the top thereof, a

burner for said furnace adapted to feed fuel thereinto, and means beneath said furnace for' admitting air thereto.

2. In a furnace, a structure having a series of passages extending upwardly and rearwardly from ther` bottom, then forwardly and upwardly through the top thereof, a

' burner at the front adapted to feed fuel into the furnace and means beneath the furnace for admitting air thereto.

3.' In a furnace, a structure having a series ofpassages extending upwardly and rearwardly from the bottom, then forwardly and lupwardly through the top thereof, a

yburner at the front adapted to feed fuel 'comprising interitting sections nested toone ofps'ald passages througheachgether of said sections.

5. In a furnace, a struct-ure having a. series of passages extending upwardly and rearwardly from the bottom, Athen forwardly and upwardly through the "top thereof, a burner at the front adapted to feed fuel into the furnace and means beneath the furnace for admitting` air thereto, said structure comprising inter-fitting sections nested together, one of said passages through each of said sections, the top edge of each preceding passage wall projecting above each succeeding passage.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

CHARLES D. MUSHER. lWitnesses:

ETHEL GARDNER, THOMAS A. HILL. 

